Incidental Mutation 'R0863:Ttc21b'
ID 82176
Institutional Source Beutler Lab
Gene Symbol Ttc21b
Ensembl Gene ENSMUSG00000034848
Gene Name tetratricopeptide repeat domain 21B
Synonyms Thm1, line 158, aln, 2410066K11Rik
MMRRC Submission 039037-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R0863 (G1)
Quality Score 225
Status Validated
Chromosome 2
Chromosomal Location 66014671-66086961 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 66073117 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Valine at position 190 (I190V)
Ref Sequence ENSEMBL: ENSMUSP00000131758 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000102718] [ENSMUST00000125446]
AlphaFold Q0HA38
Predicted Effect probably benign
Transcript: ENSMUST00000102718
AA Change: I190V

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000099779
Gene: ENSMUSG00000034848
AA Change: I190V

DomainStartEndE-ValueType
Blast:TPR 109 141 5e-12 BLAST
Blast:TPR 178 211 3e-12 BLAST
TPR 324 357 4.21e1 SMART
low complexity region 379 390 N/A INTRINSIC
TPR 492 525 8.51e0 SMART
TPR 526 559 5.92e1 SMART
TPR 563 596 7.69e1 SMART
TPR 721 754 3.07e-5 SMART
TPR 755 788 9.45e0 SMART
TPR 790 821 9.24e1 SMART
TPR 830 863 3.05e0 SMART
TPR 883 916 1.55e-1 SMART
TPR 917 950 8.74e0 SMART
TPR 951 984 6.75e1 SMART
Blast:TPR 1023 1054 5e-13 BLAST
Blast:TPR 1156 1189 1e-12 BLAST
TPR 1196 1229 9.7e0 SMART
TPR 1265 1298 1.02e1 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000125446
AA Change: I190V

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000131758
Gene: ENSMUSG00000034848
AA Change: I190V

DomainStartEndE-ValueType
Blast:TPR 108 141 3e-12 BLAST
Blast:TPR 178 211 3e-12 BLAST
TPR 324 357 4.21e1 SMART
low complexity region 379 390 N/A INTRINSIC
TPR 492 525 8.51e0 SMART
TPR 526 559 5.92e1 SMART
TPR 563 596 7.69e1 SMART
TPR 721 754 3.07e-5 SMART
TPR 755 788 9.45e0 SMART
TPR 790 821 9.24e1 SMART
TPR 830 863 3.05e0 SMART
TPR 883 916 1.55e-1 SMART
TPR 917 950 8.74e0 SMART
TPR 951 984 6.75e1 SMART
Blast:TPR 1023 1054 4e-13 BLAST
Blast:TPR 1156 1189 9e-13 BLAST
TPR 1196 1229 9.7e0 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000131503
Meta Mutation Damage Score 0.0898 question?
Coding Region Coverage
  • 1x: 99.5%
  • 3x: 98.9%
  • 10x: 97.4%
  • 20x: 94.8%
Validation Efficiency 94% (59/63)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a member of TTC21 family, containing several tetratricopeptide repeat (TPR) domains. This protein is localized to the cilium axoneme, and may play a role in retrograde intraflagellar transport in cilia. Mutations in this gene are associated with various ciliopathies, nephronophthisis 12, and asphyxiating thoracic dystrophy 4. [provided by RefSeq, Oct 2011]
PHENOTYPE: Homozygous mutation of this gene is embryonic lethal. Mutant embryos exhibit several deformities including polydactyly, microphthalmia, irregular shape of the long bones, rib fusion and truncation, neural tube defects, and abnormal brain structure. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 59 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
2310016G11Rik A G 7: 44,327,232 (GRCm39) noncoding transcript Het
4930433I11Rik A T 7: 40,642,480 (GRCm39) T141S probably benign Het
Abca14 A T 7: 119,815,453 (GRCm39) T234S probably benign Het
Acap1 C A 11: 69,777,882 (GRCm39) V119L probably damaging Het
Actr2 C T 11: 20,030,760 (GRCm39) V163I probably benign Het
Adcy4 T C 14: 56,021,056 (GRCm39) Y27C probably damaging Het
Arnt2 T A 7: 83,914,792 (GRCm39) K524M probably damaging Het
Brca1 T C 11: 101,415,596 (GRCm39) Y846C probably benign Het
Capn7 T A 14: 31,091,714 (GRCm39) C704S possibly damaging Het
Cep350 T A 1: 155,737,981 (GRCm39) I2621L probably benign Het
Col11a1 G A 3: 113,932,414 (GRCm39) R113H unknown Het
Ctnnbl1 C T 2: 157,641,337 (GRCm39) probably benign Het
Cul9 T C 17: 46,848,748 (GRCm39) probably null Het
Erc2 A C 14: 27,747,105 (GRCm39) N345T probably benign Het
Fank1 A G 7: 133,482,352 (GRCm39) R73G possibly damaging Het
Fes A T 7: 80,030,634 (GRCm39) W552R probably damaging Het
Fsd2 A G 7: 81,191,913 (GRCm39) V488A possibly damaging Het
Gfm1 T C 3: 67,381,928 (GRCm39) S705P probably damaging Het
Gm9493 A T 19: 23,597,173 (GRCm39) Q23L probably benign Het
Gucy1b2 T C 14: 62,656,511 (GRCm39) D282G probably benign Het
H2-Ab1 T C 17: 34,486,328 (GRCm39) I129T probably damaging Het
H2-M10.3 T A 17: 36,677,582 (GRCm39) Y232F probably damaging Het
Iqca1 C A 1: 90,070,453 (GRCm39) G133V probably null Het
Lonp1 T C 17: 56,925,331 (GRCm39) K487R probably damaging Het
Ltbp1 A G 17: 75,559,381 (GRCm39) Y290C probably damaging Het
Ms4a10 C T 19: 10,945,957 (GRCm39) G58D probably damaging Het
Muc5b A G 7: 141,421,454 (GRCm39) S4315G probably benign Het
Nlrp1b T A 11: 71,072,173 (GRCm39) T557S probably benign Het
Nlrp3 A G 11: 59,456,676 (GRCm39) D946G probably benign Het
Obscn T C 11: 58,886,241 (GRCm39) probably benign Het
Oga C T 19: 45,771,425 (GRCm39) A49T probably benign Het
Or10ab5 A G 7: 108,244,865 (GRCm39) I306T probably benign Het
Or5p50 T C 7: 107,422,581 (GRCm39) S32G probably benign Het
Or7e173 A T 9: 19,938,509 (GRCm39) S242T probably damaging Het
Pask A T 1: 93,242,061 (GRCm39) F1219I probably damaging Het
Pcdhb2 G A 18: 37,428,710 (GRCm39) V228I possibly damaging Het
Phf1 T C 17: 27,156,114 (GRCm39) probably benign Het
Plec G A 15: 76,058,280 (GRCm39) Q3751* probably null Het
Plscr1l1 A T 9: 92,233,140 (GRCm39) I88L possibly damaging Het
Ppp1r12c G T 7: 4,489,365 (GRCm39) Q240K probably damaging Het
Ralgapa1 A T 12: 55,809,466 (GRCm39) Y436* probably null Het
Ralgapa1 C A 12: 55,829,562 (GRCm39) probably benign Het
Scel T A 14: 103,823,916 (GRCm39) S381R possibly damaging Het
Sema4a C T 3: 88,355,456 (GRCm39) probably benign Het
Sltm A G 9: 70,469,190 (GRCm39) T150A probably benign Het
Spag1 G T 15: 36,192,193 (GRCm39) K217N probably damaging Het
Ssh1 C T 5: 114,104,792 (GRCm39) R9H probably damaging Het
St3gal4 C A 9: 34,964,744 (GRCm39) V155F probably damaging Het
Stxbp5 C T 10: 9,684,784 (GRCm39) E539K possibly damaging Het
Tbc1d7 G T 13: 43,308,161 (GRCm39) probably benign Het
Thnsl2 A T 6: 71,111,208 (GRCm39) L220* probably null Het
Tinf2 G A 14: 55,917,566 (GRCm39) P308S probably benign Het
Tnf T C 17: 35,420,120 (GRCm39) probably benign Het
Ttn T C 2: 76,537,391 (GRCm39) T34846A probably benign Het
Ube4a A G 9: 44,861,114 (GRCm39) V232A possibly damaging Het
Uri1 A T 7: 37,669,100 (GRCm39) D122E probably damaging Het
Vmn2r94 T G 17: 18,477,973 (GRCm39) Q146P probably damaging Het
Zan T A 5: 137,456,901 (GRCm39) E1278D unknown Het
Zfhx4 T A 3: 5,310,375 (GRCm39) S919R possibly damaging Het
Other mutations in Ttc21b
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00465:Ttc21b APN 2 66,073,119 (GRCm39) missense probably benign 0.00
IGL00467:Ttc21b APN 2 66,018,708 (GRCm39) missense probably damaging 1.00
IGL00721:Ttc21b APN 2 66,057,122 (GRCm39) missense probably benign 0.06
IGL00837:Ttc21b APN 2 66,065,915 (GRCm39) critical splice donor site probably null
IGL01317:Ttc21b APN 2 66,018,700 (GRCm39) missense probably benign 0.00
IGL01485:Ttc21b APN 2 66,082,234 (GRCm39) splice site probably benign
IGL01739:Ttc21b APN 2 66,068,200 (GRCm39) missense probably benign
IGL02282:Ttc21b APN 2 66,022,081 (GRCm39) missense probably damaging 0.96
IGL02431:Ttc21b APN 2 66,082,229 (GRCm39) splice site probably benign
IGL02478:Ttc21b APN 2 66,018,624 (GRCm39) missense probably benign 0.05
IGL02487:Ttc21b APN 2 66,065,500 (GRCm39) missense probably benign 0.02
IGL03327:Ttc21b APN 2 66,068,192 (GRCm39) missense possibly damaging 0.92
IGL03346:Ttc21b APN 2 66,068,192 (GRCm39) missense possibly damaging 0.92
plus-sized UTSW 2 66,073,023 (GRCm39) missense probably damaging 1.00
puffer UTSW 2 66,057,244 (GRCm39) missense probably benign 0.12
PIT4696001:Ttc21b UTSW 2 66,061,563 (GRCm39) splice site probably null
R0049:Ttc21b UTSW 2 66,053,908 (GRCm39) missense probably damaging 1.00
R0049:Ttc21b UTSW 2 66,053,908 (GRCm39) missense probably damaging 1.00
R0373:Ttc21b UTSW 2 66,018,670 (GRCm39) missense probably damaging 0.99
R0440:Ttc21b UTSW 2 66,066,726 (GRCm39) missense probably benign 0.03
R0504:Ttc21b UTSW 2 66,053,142 (GRCm39) splice site probably benign
R0600:Ttc21b UTSW 2 66,069,914 (GRCm39) missense probably damaging 0.99
R0621:Ttc21b UTSW 2 66,056,355 (GRCm39) missense probably benign 0.07
R0633:Ttc21b UTSW 2 66,066,577 (GRCm39) missense probably benign
R1617:Ttc21b UTSW 2 66,056,379 (GRCm39) missense probably benign 0.22
R1837:Ttc21b UTSW 2 66,028,106 (GRCm39) missense probably benign 0.01
R1844:Ttc21b UTSW 2 66,053,921 (GRCm39) nonsense probably null
R2120:Ttc21b UTSW 2 66,057,098 (GRCm39) missense probably benign 0.12
R2205:Ttc21b UTSW 2 66,065,467 (GRCm39) missense possibly damaging 0.51
R2392:Ttc21b UTSW 2 66,037,794 (GRCm39) critical splice donor site probably null
R3689:Ttc21b UTSW 2 66,054,488 (GRCm39) missense probably benign 0.22
R3810:Ttc21b UTSW 2 66,082,577 (GRCm39) critical splice acceptor site probably null
R3847:Ttc21b UTSW 2 66,073,023 (GRCm39) missense probably damaging 1.00
R3897:Ttc21b UTSW 2 66,065,413 (GRCm39) missense probably benign 0.01
R4561:Ttc21b UTSW 2 66,016,562 (GRCm39) missense probably damaging 1.00
R4671:Ttc21b UTSW 2 66,057,257 (GRCm39) missense possibly damaging 0.66
R5161:Ttc21b UTSW 2 66,059,367 (GRCm39) missense probably damaging 0.98
R5274:Ttc21b UTSW 2 66,066,627 (GRCm39) missense possibly damaging 0.89
R5594:Ttc21b UTSW 2 66,066,579 (GRCm39) missense probably benign 0.39
R6210:Ttc21b UTSW 2 66,066,698 (GRCm39) missense probably benign 0.00
R6305:Ttc21b UTSW 2 66,018,614 (GRCm39) missense probably damaging 0.99
R6456:Ttc21b UTSW 2 66,018,675 (GRCm39) missense probably damaging 0.97
R6482:Ttc21b UTSW 2 66,057,244 (GRCm39) missense probably benign 0.12
R6645:Ttc21b UTSW 2 66,066,721 (GRCm39) missense probably benign 0.01
R6800:Ttc21b UTSW 2 66,038,994 (GRCm39) splice site probably null
R6815:Ttc21b UTSW 2 66,057,134 (GRCm39) missense probably benign 0.00
R6959:Ttc21b UTSW 2 66,061,656 (GRCm39) missense probably benign 0.05
R7125:Ttc21b UTSW 2 66,066,670 (GRCm39) missense probably benign 0.00
R7265:Ttc21b UTSW 2 66,040,517 (GRCm39) missense possibly damaging 0.89
R7283:Ttc21b UTSW 2 66,039,062 (GRCm39) missense probably damaging 0.96
R7560:Ttc21b UTSW 2 66,047,548 (GRCm39) missense possibly damaging 0.69
R7561:Ttc21b UTSW 2 66,047,548 (GRCm39) missense possibly damaging 0.69
R7816:Ttc21b UTSW 2 66,077,705 (GRCm39) missense possibly damaging 0.82
R8172:Ttc21b UTSW 2 66,082,500 (GRCm39) missense probably benign 0.01
R8179:Ttc21b UTSW 2 66,031,824 (GRCm39) missense probably benign
R9047:Ttc21b UTSW 2 66,031,596 (GRCm39) missense
R9282:Ttc21b UTSW 2 66,056,349 (GRCm39) missense possibly damaging 0.65
R9336:Ttc21b UTSW 2 66,057,287 (GRCm39) missense probably benign
R9464:Ttc21b UTSW 2 66,053,866 (GRCm39) missense probably damaging 1.00
X0013:Ttc21b UTSW 2 66,056,294 (GRCm39) nonsense probably null
Predicted Primers PCR Primer
(F):5'- ACATAACCTTTGTGCTGTCTCCACTGTC -3'
(R):5'- ACCACATCTCAGCTTAGCCATGTAGAA -3'

Sequencing Primer
(F):5'- ACTGTCTGATCCCAATCCTGTAAAG -3'
(R):5'- ACAGACTGACTTTAAGTGGTGGC -3'
Posted On 2013-11-08